From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1986C43144 for ; Thu, 28 Jun 2018 11:24:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 70EC125721 for ; Thu, 28 Jun 2018 11:24:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 70EC125721 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=techadventures.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965417AbeF1LYN (ORCPT ); Thu, 28 Jun 2018 07:24:13 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:36015 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751155AbeF1LYM (ORCPT ); Thu, 28 Jun 2018 07:24:12 -0400 Received: by mail-wm0-f66.google.com with SMTP id u18-v6so8660133wmc.1 for ; Thu, 28 Jun 2018 04:24:11 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=UKr5OAlCNAgYLwF64gnkCFKXbEsRAMa6Yjmwx+2UmcY=; b=jlvCdKuXSBOjQFNTT7I3fSffqgSoObPoQltn8L1ZEsocyiuODh27/uXkJadgBOtyYf Nj10pvVi3XEzNl6Ke0x4nFfDSZmQYdF2IG4yMPVWHfEohMBl+kkCyCSAQ6Abqfh/yA1b gQwuWH2W62xKj5J26PZff/LI4HtZAwW7fy50pQ9AJ4vl/RcAgGbYtvAjk1vgrzuC66zK /TzJwA+ANQcdqPeZ8GJNev0700h5oYpSxm9L5xQ7TL26reqnaVWUctWy61SJsUKrfX9n 1U8mcMQq0L85VKbRUp1umqww2+lgxg/hm4v6hfEU18dff+oNHFtP6ifb7wwiwwJ22v/z Dt7w== X-Gm-Message-State: APt69E0Tu1t4YTt4swF4oR0oGDp5wz0EZ1FpTSaOZAzIj+RyY3uy2cr0 +2Y4gYxDP4Iul4dirljV0M0= X-Google-Smtp-Source: AAOMgpeXASgy5/FogpaCbqRChabM8JyYH6ObgtwqT54r2i/ElBSISSWh+uq1I7tsGLgRai63r1EM3Q== X-Received: by 2002:a1c:7a19:: with SMTP id v25-v6mr1235088wmc.81.1530185051224; Thu, 28 Jun 2018 04:24:11 -0700 (PDT) Received: from techadventures.net (techadventures.net. [62.201.165.239]) by smtp.gmail.com with ESMTPSA id m3-v6sm6560904wro.27.2018.06.28.04.24.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Jun 2018 04:24:10 -0700 (PDT) Received: by techadventures.net (Postfix, from userid 1000) id B725212390E; Thu, 28 Jun 2018 13:24:09 +0200 (CEST) Date: Thu, 28 Jun 2018 13:24:09 +0200 From: Oscar Salvador To: Baoquan He Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, dave.hansen@intel.com, pagupta@redhat.com, Pavel Tatashin , linux-mm@kvack.org, kirill.shutemov@linux.intel.com Subject: Re: [PATCH v6 1/5] mm/sparse: Add a static variable nr_present_sections Message-ID: <20180628112409.GB12956@techadventures.net> References: <20180628062857.29658-1-bhe@redhat.com> <20180628062857.29658-2-bhe@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180628062857.29658-2-bhe@redhat.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 28, 2018 at 02:28:53PM +0800, Baoquan He wrote: > It's used to record how many memory sections are marked as present > during system boot up, and will be used in the later patch. > > Signed-off-by: Baoquan He > Reviewed-by: Pavel Tatashin Reviewed-by: Oscar Salvador > --- > mm/sparse.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/mm/sparse.c b/mm/sparse.c > index f13f2723950a..6314303130b0 100644 > --- a/mm/sparse.c > +++ b/mm/sparse.c > @@ -200,6 +200,12 @@ static inline int next_present_section_nr(int section_nr) > (section_nr <= __highest_present_section_nr)); \ > section_nr = next_present_section_nr(section_nr)) > > +/* > + * Record how many memory sections are marked as present > + * during system bootup. > + */ > +static int __initdata nr_present_sections; > + > /* Record a memory area against a node. */ > void __init memory_present(int nid, unsigned long start, unsigned long end) > { > @@ -229,6 +235,7 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) > ms->section_mem_map = sparse_encode_early_nid(nid) | > SECTION_IS_ONLINE; > section_mark_present(ms); > + nr_present_sections++; > } > } > } > -- > 2.13.6 > -- Oscar Salvador SUSE L3